When an SSL-enabled mongoc_client_t attempts to communicate to a mongod listening on an unsecure socket it leaks one socket per request.

Calling mongoc_client_destroy to clean up the mongoc_client_t does not clean up the sockets. Exiting the applications is the only way to free the sockets.

Steps to reproduce:

• Configure mongod to listen on an unsecure port.
• Configure a mongoc application to communicate with mongod, attempting to use an SSL connection.
• Run the application
• Run 'netstat -b' to observe the increasing number of established socket connections that never close.